Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Deferred tax liabilities:
Property-related	$ 10,144	$ 10,018
Pension	552	564
Investments in partnerships and joint ventures	3,144	2,783
Other	2,666	2,092
Total deferred tax liabilities	16,506	15,457
Deferred tax assets and valuation allowance:
Decommissioning reserves	306	296
Net operating loss carryforwards	346	330
Tax credit carryforwards	4,905	4,646
ARO and accrued asset removal costs	199	199
Regulatory liabilities	1,332	1,421
Other	822	733
Valuation allowance	(257)	(282)
Net deferred tax assets	7,653	7,343
Net deferred income taxes	8,853	8,114
Deferred tax assets and liabilities included in the consolidated balance sheets [Abstract]
Noncurrent other assets	219	196
Deferred income taxes – noncurrent liabilities	(9,072)	(8,310)
Net deferred income taxes	(8,853)	(8,114)
FPL [Member]
Deferred tax liabilities:
Property-related	8,177	7,831
Pension	439	425
Investments in partnerships and joint ventures	3	3
Other	1,914	1,232
Total deferred tax liabilities	10,533	9,491
Deferred tax assets and valuation allowance:
Decommissioning reserves	306	296
Net operating loss carryforwards	19	2
Tax credit carryforwards	123	182
ARO and accrued asset removal costs	107	126
Regulatory liabilities	1,308	1,397
Other	295	351
Valuation allowance	0	0
Net deferred tax assets	2,158	2,354
Net deferred income taxes	8,375	7,137
Deferred tax assets and liabilities included in the consolidated balance sheets [Abstract]
Noncurrent other assets	1	0
Deferred income taxes – noncurrent liabilities	(8,376)	(7,137)
Net deferred income taxes	$ (8,375)	$ (7,137)